Conclusion: DBLinq 2007

DBLinq is not matured product yet. At least in conjunction with MySql. Nested queries are not implemented yet. Simple grouping failed also, the following example produce run-time error.
var lastSalaries = from s in emp.Salaries
    orderby s.EmPNo ascending, s.ToDate descending
    group s by s.EmPNo into grp
    let o = grp.First()
    select new { o.EmPNo, o.Salary }; 
:( Looking forward for new releases.

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